Timber Pile to Beam Connection Problem Ideas?

Anyone have any ideas for this problem I am trying to think of something to recommend? Basically see the attached sketch, at a residential driveway there is fill which the soil pressure has caused 12" timber piles to lean, there are a total of 8 piles, the largest span between two of the piles is 5 feet, and differential horizontal movement of a maximum of 6 inches at the top of the piles away from where it originally was. Since then, a steel channel was ran across all the piles with tie backs to keep the piles from moving any further. However, because of the movement, it has caused rather severe twisting of a beam supporting the 4x12 floor joists above. There is a 12 x 12 directly above the pile, then another smaller sized beam (roughly 6x12?) sitting on top of that. The 12x12 is preferable to remain, the other member we can replace. What sort of solutions does anyone can think of some type of bracket to connect the pile, and 2 timber members on top of it. I was thinking maybe getting the same sized members together to be able to "strap" them together flush with a steel channel? What other solutions of some connections can anyone suggest, or what type of loads should I anticipate and try to design for? Any standard connections for this or will it have to be custom fabricated? Any possible hardships of a project like this? Would appreciate any and all help.